<div class="row">

    <div class="col-xs-3">
        满： <input type="text" class="form-control" placeholder="满" name="promotion_full" id="promotion_full" class="form-control promotion_full">
    </div>

    <div class="col-xs-4">
        减：<input type="text" class="form-control" placeholder="减" name="promotion_reduce" id="promotion_reduce" class="form-control promotion_reduce">
    </div>
</div>
